Improvement in lathes



J. BACHELDER.

LATHE. V

Patented Feb. 15, 1876.

[WWZZWE' N. FETERs, PHOTO-LITNOGRAPNER. WASHINGTDN. D. C.

JOHN-BAOHELDER, or eannnvna, MAINE, 'ASSIGNOR OF ONE-HALF HIS RIGHT TOJOEL JENKINS, or NEW roams. Y.

lMPRbVEME N T IN LATHES.

Specification forming part of Letters Patent N o. 173,576, dated February 15, 1876; application filed I September 22, 1875.

To all whom it may coucern Be it known that I, Jornv BAGHELDER, of Gardiner, in the County of Kennebec and State of Maine, have invented an Improvement in Lathes, and that the following is a full, clear, and exact description of the same, reference being had tothe accompanying drawings, and

to the letters of reference marked thereon making a part of this specification.

This invention is in the nature of animprovement in turning bobbins, spools, &c.; and

. the invention consists in a bobbin-turning machine constructed'with revolving head and tail stocks, adjustable on their axis, and with reciprocating and automatically-adj usting perforator, dead-spindle, and pulley, substantially as hereinafter described.v

In the accompanying sheet of drawings, Figure 1 is a plan ortop view of my machine; Fig. 2, a cross-section of'same in line was, Fig.

"1; Fig. 3, a detailedsection showing perfo' rator, and Figs. 4 and 5 are views showing cams for perforator and spindle.

Similar letters of reference indicate like parts in the several figures. A i

It is desirable to turn quickly and cheaply bobbins of all kinds and spools. By'my improved machine, not only is ,the spool or bobbin turned to the right size and shape,

but it is also perforated at the time of turn.

ing the bobbin. .Toaccomplish this, head and tail stocks A and B are securedupon a central revolvingaxis, C, so that, as this shaft is caused to revolve by any suitable mechanism, the head and tail stocks will be carried or revolved with it. To the head-stock A,

fitted into suitable bearings formed into said tail-stock B is also fitted a cen tering-spindle, j, the portion of which that projects beyond the H, to the machine.

rear surface of the stock is provided with a disk having a screw and a guide-pin, in precisely the same manner as is the disk on the .peforator, a, the guide-pins in each instance being secured at oneend to the head and tail stocks, respectively. The head and tail stocks before mentioned are secured to the axis or central shaft 0, with which they revolve, by setscrews a and I. These screws enter into suitable holes tapped beneath the head and tail stocks, and also into bosses or collars m and n, fixed to the shaft 0. Fixed to the frame-work E, of the machine are two disks amt ST 'rEs PATENT Orrron. I

or drums, 0 and p, with spiral ribs rand s,

forming cams, and to the frame-work E are also secured springs, t t these springs'bearing upon the surface of the disks or drumsv o and p. Through the center of these disks or drums passes the shaftO, and to one of the bosses or collars m are afiixed radial arms 11 o f, and to the ends bf these arms are affixed additional head and tail stocks.

To the frame E is also secured, by a suitable support, a gang of circular-saws, y. This support for the circular sawsis formed to the arc of a circle, and into it is cut a curved slot, (1/, into which is fixed by a set-screw the rest, I) for the finishing-knife, 0, so that this finishing-knife may be moved in the slot if desired.

Now, my machine being constructed substantially as I have described itabove, its operation is as follows: The Wood from which the bobbins are to be made is cut into suitable lengths and fed through a feedingtrough, When the .block arrives at the end of the trough it is caught on the points of the centering-spindle j and perforatora, which are held back by the camsr and 8 until, by motion of the shaft G, they are brought opposite the center of the block, when they simultaneously give way, and are instantly forced against the center of the block by the springs t t The block is held between spindle j and perforator a until the pin in the disk of spindle j comes in contact with the cam s, by which the block is forced onto the spurs on the ends of sleeve b, at the same time forcingthe perforator a back against the spring t. The instant that the serrations in the sleeve enter the wood the block is at once revolved by the action ofbelt, al), passing around the pulley-wheel c, and, ,as the block is thus revolved, the head and tail stocks are revolved about the axis or shaft 0, and as it is carried around this axis the pin t' on the disk 9 on the end of the pert'orator ais brought in contact with theeam 1', which gradually forces the pert'orator a through the center of the block, forming the necessary perforation in it to receive the spindle when the bobbin is to be used as such. And as the block continnesto be carried around or re.- volved,-it is brought in contact with the gang' saws y, which are set at any desired position or angle, and these saws, revolving rapidly in any desired way, at once reduce the block to' any required size and form, roughing out-the bobbin complete, and leaving nothing to be done but smoothing its surface, which is accomplished by a finishing knitje or knives, ,0, against which the bobbin is brought, "and which shaves ofi' the roughened surface, l eav-- ing it smooth and the bobbin complete. The completed bobbin continuing to revolve,:the. cams r and s, acting respectively on the perforator and centering-spindle, drawing them apart, free the bobbin ,from the spindle and ncrt'oratorand disengage it from the serrations in the sleeve, permitting it todrop com-, pleted into any desired receptacle, when the centering-spindle and perforator are brought in contact-with another block at the'endof the trough, and the operation just described is repeated, and so on, so long as it is desired to make thebobbins.

To adapt the machine to turning bobbins of any given size, the head and tail stocks A and B may be raised from or brought nearer to the centralshaft U bysimply screwing in and out the set-screws l0 .and l, when, as is obvi-. ous, the head and tail stocks and theblock between them will be brought nearer -to or .i'arther'froln the gang-saws, and .thus enablev thesawstoreduceanore or less the bobbin, aking" its larger or sma er- $1 .1 fin s n kni'i'e c is secured to "the support of the gang'- saws in a curved slot, at, as before stated. By thisarrangement, while the knife may be brought to bear on any portion of the bobbin, whether above-or below its center, yet,-since it is 'adjustedin an arc,thisehange of position will not change its nearness to the bobbin; in other words, it Willat all times maintain its given distance from the bobbin at whatever angle it may be set. It is obvious that several knives may be used in the slot at or support. 'Jlhepulley-wheels 10 1/0 w shown in thedrawings, are dispensed-with when the radial arms 0 o c are used to support additional head and tail stocks.

Having thus'described myinvention, what I claim as new, and desire to secure by Letters Patent, is

l. Inaqn'achine for turning rbobbii1s, spo,ols,

8pc, the revolving head and .tail stocks, in

combination with devices a j for holding or centering the-bobbin, &c., independently-open dependentl y-rotating bobbin --holder a j, in

combination with the antomatically-operating perforator a, constructed and arranged sub stantially as described.

. JOHN BAOHELDER.

Witnesses: 1

A. .0. STEPHEN, JAMES B. WHITE. 

